Team BMR's Colin Turkington has narrowly beaten WSR's Andy Priaulx in another wet-dry practice as the Volkswagen's announce their searing pace at Brands Hatch.

A heavy downpour following the morning session once again set the scene for another unpredictable 40-minutes of running as the battle for pole-position looks set to be wide open.

Amazingly, half-way through the session, it was advantage Honda with Gordon Shedden and Matt Neal both setting the pace as others tip-toed around the Indy circuit.

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The two Civic Type-R's were joined by FP1 pacesetter Tom Ingram, Sam Tordoff and Mercedes' Adam Morgan at the top of the table as the group traded lap-times throughout that segment.

As the times tumbled, the 27-car field grew ever closer with the grip levels beginning to play into the drivers' hands, setting up an enthralling climax to the session.

Two-thirds of the way through, however, the Volkswagen's began to make a move as Jason Plato shot to the top of timesheets - eclipsing the speed traps in the process - before his team mate Aron Smith quickly displaced the 88-time winner to second.

That looked to be that but defending champion Turkington had the final say of proceedings after setting a 48.940 second lap in the dying seconds of the session.

BTCC returnee Andy Priaulx - sixth in the first session - sensationally almost went even faster than Turkington but his 49.066 second lap couldn't quite oust the champion from the top spot.

Little over a tenth of-a-second could separate the top four as the chequered flag fell.

Tordoff and Morgan followed closely in fifth and sixth while Triple Eight's Jack Goff finally posted a somewhat representative for MG in seventh.

Shedden and Neal ultimately couldn't live the front-running pace as they eventually fell to eight and tenth with Rob Austin separating the Honda's in ninth.